<template>
<div>
  祖组件来了
  <Son/>
</div>
</template>

<script>
/* 

2.x全局API( vue )             3.x实例API ( app)
vue.config.xxXX               app.config.xxXX
vue.config.productionTip      移除
Vue.component                 app.component
Vue.directive                 app.directive
Vue.mixin                     app.mixin
Vue.use                       app.use
Vue.prototype                 app.config.globalProperties 

*/


import { reactive,provide } from "vue";
import Son from './components/Son.vue'
export default {
  name: "App",
  components: {
    Son,
  },
  setup() {
    return{}
  },
};
</script>

<style scoped>
</style>
